Carbureter for explosive-engines.



L. P. POSNOT. UARBURBTER FOR EXPLOSIVE ENGINES. APPLICATION FILED SEPT.1a, 1906.

Patented Jan. 5, 1909.

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grill/11511117511? 61 Route/13a L. P. FOSNOT. CARBURETER FOR EXPLOSIVEENGINES.

APPLICATION FILED SEPT. 13, 1906.

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Patented Jan. 5, 1909.

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LoUIs'P. rosxor, or Ramiro. PENXSYULUIA. AsSlHNUR. n'i' .ursxi;ASb'lUIUU-JX'IS. 'ro

READING STAA'DARD L'UllPkX Y. A

CORPORATION OF PENNSYLVANIA.

CAR-BURETER, FOR 'EXPLOSIVE-ENGINES.

Specificationof Letters. Patent.

Patented Jan. 5, 1909.

Implication filed September 13, 1906. Serial No. 334,368.

To all whom it may concern.

Be it known that I, Loris P. Fosxo'r, a citizen of the United States,and a resident of the city ofReading, in the county of. Berks and Stateof Pennsylvania, have invented certain new and useful Improvements inCarburetors for Explosive-Engines, of which the following is aspecification.

My invention relates particularly to carbureters adapted for motorcycleuse, and it consists in certain improvements in construction hereinafterfully described in connec tion with the accompanying drawings and thenovel features of which are specifically pointed out in the claims.

Figure 1 is a partly sectional elevation of a carbureter embodying myinvention in preferred form, the section being taken on the line 11 ofFigs. 2 and 4. Fig. 2 is a plan view of the same. Fig. 3 is a partlysectional elevation taken on the line 3-3 of Figs. 2 and 4. Fig. 4 is asectional-plan view taken on the line 4-4 of Figs. 1 and 3. Fig. 5indicates a modified construction in sectional elevation.

An ordinary spraying device for gasolene or other hydrocarbon liquid, isindicated at T 5, located in a central tube 6' of the carbureter andcommunicating through suitable conduits 7, 8, with a gasolene chamber 9.In the preferred construction shown this central tube 6 rises from aperforated or spoked plate lO-which screws into the lower end of themixing chamber cylinder hereafter described, and it is looselysurrounded by a partition ring 11 carried by said plate 10. i Thispartition ring forms an annular outer air-chamber 12 and an annularinner air-chamber 13-both communicating with a lower air-inlet chamber14 which is carried by a depending extension 15 of the central tube 6. i

The mixing chamber cylinder as shown is formed by a lowermain portion 20and an upper outlet portion 21, the former of which is provided with avertically movable cylindrical cutoff valve 22 in addition to thesprayer and partition ring 11 already mentioned, while the latter isprovidedwith a rotary cylindrical throttle valve 23 arranged to regulatethe-volume of fuel gas discharged tlirough the side outlet 24 there--from. The particular construction and co operative arrangement of thesearts are as follows: The cyllndrical cut-o valve 22,

i which slidably fits in cylinder 20. has its lower circular edge 25arranged to seat upon the cone-shaped top portion 26 of the partitionring 11 so as to cut oil theupward flow excepting as such additionalsupply of air is of fuel-gas discharged through the outlet 24 when thethrottle valve 23 is opened for heavier work than the normal. This openoff valve 22 is effected coincidently with the opening of the rotarythrottle valve by valves. The throttle valve 23 is provided with a stem31 secured to the valve head 32 and extending through a cap 33 on themixing,,-chamber cylinder 21; the projecting stem having a handle 34suitably fixed thereto for convenient handling by the operator. Thecentral connecting rod 30 is fixedly attached at its lower end to theopen head 36 .of the cylindrical cut-01f valve 22, and extends upwardinto the rotary throttle valve 23, with which it is operativelyconnected by means of a loose transverse pin 37 inserted in the hollowhead 38 of the rod 30; the projecting ends of said pin being arranged inengagement with the oblique slots 39 formed in the cylindrical wall ofthe throttle valve 23, so that the rotary movement of the latter wallport 40 registering with the side outlet 24 from the mixing chamber.will correspondingly effect the lifting of the air cut-off valve 22. Thelatter is vertically guided in the cylinder 20 by means of a lateralprojection 41 engaging a vertical wall slot 42. so as to be incapable ofrotary movement.

The gasolene chamber 9. as shown, is an annular chamber surrounding themixing cylinder 20 and formed integral therewith, the separately formedupper cylindrical por tion 21 being secured to the lower cylindricalportion 20 by means of a bolting flange 45 arranged to cover saidgasolene chamber.

The supply of gasolene to the chamber 9 is controlled as usual by aneedle valve 50. This valve as shown is mountedin a vertical conduit 51.connected to a supply tube 52 and comunicating at 53 with the chamber'9. To provide for nicely adjusting this valve its point is seated in aring 54 which is adjustable vertically in a screw-threaded porof airthrough the outer annular passage 12 called for to provide the increasedamounting movement of the vertically sliding cut-- i means of a centralrod 30 connecting the two tion of the conduit 51, while the upper por---required to properly increase the portion of tion of its stem is guidedin a screw-cap'55 and its vertical lift is regulated by an adjustingscrew 56- as indicated. To provide for the'automatic opening and closingof the valve' as required I employ a lever 60 piv- 'oted intermediatelyat 61 and having its short end 62 engaging the stem of the valve Whileits semi-circular inner portion is carried half way around the mixingcylinder and has its ends 63 arranged to contact with anannular float'64 in the gasolene chamber 9'so asto be lifted by the latter when saidchainberis (properly-filled, and thereby closing thence le valve whichis normally held open by said lever.

In the modified construction indicated in Fig. 5, the rotary throttlevalve 70in the upper portion of the mixing cylinder, is

- Instead of locating the gasolenechamber around the mixin cylinder, itis in this case shown to one si e thereof and the needle valve mechanismdescribed is located centrally in said chamber.

What I claim is 1. In a carbureter having a cylindrical mixingchamberwith side outlet near one end thereof, and a central hydrocarbon inletand an air inlet chamber surrounding the same at the other end, a hollowconical partition in said air-inlet chamber, a cylindrical air cut-0Evalve in'said mixing chamber seating on said conical partition, and aseparately formed and independently mounted throttle-valve for saidoutlet .operatively connected 'to said cut-01f valve substantially asset forth. R

2.. In a ca'rbureter having a cylindrical mixing chamber with sideoutlet near one end thereof, and a central hydrocarbon inletand an airinlet chamber surrounding the same at the other end, a li'ollow conicalpartition in said air-inlet chamber, a vertically movable cylindricalair cut-off valve in said chamber seating on said conical partition, anda rotary cylindrical throttle valve for said outlet operativelyconnected to said cut off valve substantially as set forth. 7

In testimony whereof, I aflix my" signature, in the presence of twowitnesses.

'D. M. STEWART, W. G. STEWART.-

